Mr. Jui-Hsiung Yen served as our general manager from 1996 to 2008 and has served as our chiarman since September, 2008.  He again has served as our gereral manager since  September, 2015.  He also serves of the chairman of Suzhou Tongyu Machine Tool Co.,Ltd, Asia Pacific Elite Corp., Tong Fong Automation Co.,Ltd., PCI-SCEMM, Contrel Technology Co., Ltd., F.S.E Corporation and Ever Lumin Incorporation, respectively and the director of Yeou Sheng Machine Co., Ltd. and Cyber laser Taiwan Co., Ltd. (representative of Contrel Technology Co., Ltd. ).   Mr. Jui-Hsiung Yen formerly served as the chairman of The Allied Association For Science Park Industries and serves as the chairman of Taiwan Machine Tool & Accessory Builders’ Association, the chairman of Precision Machinery Research & Development Center and the director of Taiwan Aerospace Industry Association.  He holds a bachelor's degree in power mechanical engineering from National Chung Cheng University.

Mr. Ying-Chun Huang has joined Tongtai since 1990 and serves as senior manager of Sales & Service Operations Division currently.  Mr. Ying-Chun Huang also serves as general manager of our subsidiaries, PCI-SCEMM and Tongtai Europe.  He possessed professional technical background and has wide experience as a customer service representative.  He is good at resource integration and has good communication and coordination ability.  He holds a bachelor's degree in power mechanical engineering from National Tsing Hua University.

Mr. Feng-Hui Chiou serves as general manager of Suzhou Tongyu Machine Tool Co.,Ltd.  He formerly served as our sales manager and vice general manager of Suzhou Tongyu Machine Tool Co.,Ltd.  Mr. Feng-Hui Chiou graduated from Department of Mechanical Engineering, Nanya Institute of Technology.

Mr. Chin-Cheng Yang serves as our senior manager of Technology Application Department and the authorized representative of our subsidiary, Honor Seiki Machine Tool Co., Ltd.  Mr. Yang has industry experience over 50 years and served as assistant manager and manager in Tongtai.

Mr. Ching-Ho Chen has dedicated himself to mechanical industry for more than 2 decades with outstanding leading and management ability.  He used to serve as many management positions and was the manager of Suzhou Tongyu Machine Tool Co.,Ltd.  Mr. Ching-Ho Chen serves as Senior Manager of Production Administration Division currently. He graduated from Department of Mechanical Enginerring, Cheng Shiu University.